Vehicle-spring.



c. @I 1. F.` FRANCIS. VEHICLE SPRING,

APPLICATION FILED FEB. 8,1915.

Patented Nov, 28, 1916.

l III V I I I i ing drawings, which CARL FRNCS AND JOE F. FRAN'CKS, OF PORTLAND, DRJEEGrlJl5IV.V

VEHCLE-SPRNG.

nena-tee.

Application filed February 8, 1915.

To all whom it m d'1/ concern Be it known that we, CARL Fimxcrs and Jon F. Farmers, citizens of the United States, residinpy at Portland, county of Multnomah, State of Uregon, having,n invented certain new and useful Improvements in Vehicle-Springs, of which the following1 isa specification.

'llhe objects of our invention are, first to provide a spring' that shall not be weakened at its central pointl by drilling' for va bolt or pin; second to provide a` spring that shall resist too great or sudden rebound; third to provide a spring that shall be cheap to manufacture and easily and economically assembled.

We attain'the above objects by means of the construction described in these specih`cations and illustrated in the accompanytherefore become a part of this application for Letters Patent, and in which .Y

Figure l is a. side elevation of a spring' embodyingl our invention. Fig. 2 is a. side elevation of the central portion of a. spring embodying' our invention, being" of larger scale than Fig. 1. Fig. 3 is a transverse section upon line A--i of F ig. 2. F ig. Llis a longitudinal section through the ends of the upper and lower leaves of the spring'. Fig. 5 is a side elevation of one of the suspension links.

Like characters indicate` like parts throughout the several views of the drawinge,7 in which#- Numeral l is the upper leaf of the springl as usually constructed, havingl end eyes 2; 3, t and 5 are' other leaves of the spring'. lin springs as usually constructed these several leaves are connected at the central point of thespring by a bolt passingA through the leaves, and the hole for Said bolt weakens the sprint); at this point.

llo overcome the above objection We omit the usual bolt construction and proa. series of cross-ivlse vide each leaf with corrugations 6, said corrugations on each leaf being adapted to engage those of the leaves immediately adjacent-above and be low said leaf, as shown in Fig. l and Fig?. 2. 'lhe engagement of these corrugations prevents any relative endwise or longitudinal motion of the several leaves.

.To increase the stili-"ness of the spring' at its central point we provide a lower leaf 'l' having; aA central flat portion 8 upon its Specification of Letters Patent.

Patenten nov.. es, loro. Serial No. 6,946.

lower face, and corrugations 6 upon its upper face. said corrugations beingadapted to engage corrugations G in leaf 5 immediately above. the leaf 7., as shown in F ig. l and F ig. v rlhe lower leaf 'i' terminates at each end thereof in eyes 9.

To insure stidness against sudden rebound of the springa we provide an upper leaf l0. of substantially flat upper face 1l, and having upon its low r face corruga tions 6b adapted to engage corrugations 6 in leaf l immediate-lv below leaf l0., as shown in Fig'. l and Fig, 2. 'llhe upper leaf l0 terminates at each end thereof in eyes i3.

The eyes 9 and 13 at each end of leaves 7 and l0 are connected by links leisuspended from bolt l5 in said eyes 9 and 13. Said links ll and bolt l5 prevent any relative sidewise or lateral movement of the several leaves of the spring.

rejections l2 are. provided upon the upper face of leaflO and upon the lower face ofleaf 7, as shown in Fig'. l and Fig. 2. Said projections are adapted to enter recesses in the axle and in the securing' clip, in the same manner that the usual through bolt is used. and this prevents either lateral or longitudinal movement of the relative to the vehicle axle.

Our invention may be made of any size, and may be constructed of any material deemed suitable and convenient for a device of this character, and While We have illustrated and described a certain form of construction and arrangement of parts considered desirable in materializing our in vention, we Wish to include in this application for Letters Patent all mechanical equivalents and substitutes that may fairly be considered to come within the scope and purview of our invention as defined in the appended claim.

Having; thus disclosed our invention so that others skilled in the art may be enabled to construct and use same, what We claim as new, and desire to secure by Letters Patent is:

A vehicle springl comprisingf in combination, having transverse corrugations at the central portion thereof, such corrugations being formed in the body of the leaf without altering' the cross section thereof, the corrug'ations of one the immediately adjacent leaves, an upper leaf, the top surface of which is substana plurality of semi-elliptical leaves leaf meshing; with those of tially plane and the lower surface of which is corrugated to mesh with the corrugations of the uppermost elliptical leaf, a lower leaf, the lower surface of which is substantially a plane and the upper surface of which is corrugated to mesh with the corrugations of the lower surface of the lowermost elliptical leaf, said lower and upper leaves each terminating; in eyes at each end 10 thereof, and links for connecting the adjacent eyes yin the ends of Said lower and upper leaves.

In witness whereof we claim the fore- ,going as our own; we hereunto affix our signatures in the presence of two witnesses.

CARL FRANCIS. v JCE F. FRANCIS.

Witnesses:

DAVID E. LOFGREN, J. A. BACKSTRAND. 

